(function () {
  const _root = document.querySelector("#app");
  if (_root && _root.innerHTML === "") {
    _root.innerHTML = `
      <style>
        html,
        body,
        #app {
          height: 100%;
          margin: 0;
          padding: 0;
          overflow: hidden;
        }
      </style>
      <iframe src="/scripts/loading.html" style="width: 100%; height: 100%" frameborder="0"></iframe>
    `;
  }
})();
